Uno «speculum episcopi» nel manoscritto Clm 6426

The manuscript Clm 6426 (ff. 25r-26r) contains a short sermo which is shown to be a re-elaborated version of an Ordo Romanus qualiter concilium agatur based on Alcuin’s letters and probably attributable to Arno, bishop of Salzburg. Moreover, a few lines of text added on the bottom part of page 26r link the sermo to another work which is found in the same manuscript, the Homelia paschalis by Liudprand of Cremona, as well as to the works of Ratherius of Verona. A transcription of a part of Ratherius’ epistola 25, based on the ms. Clm 5515, is provided in the appendix.